Fault Tolerant Reconfigurable System with Dual-Module Redundancy and Dynamic Reconfiguration.pdfVIP

JOURNALOFELECTRONIC SCIENCEAND TECHNOLOGY,VOL．9，NO．2，JUNE2011 l67 FaultTolerantRec0nfigurableSystem with Dual-M oduleRedundancyandDynamicRec0nfigurati0n Qi—ZhongZhou，XuanXie，Jing—ChenNan，Yong-LeXie，andShu—YanJiang Abstrac _TDhandletheeffectsofsingleeventupsets functionshasyeryimportantsignificna ce． rSEU which are common to computers in space Currently，moreandmorereconfigurablecomputersare radiationenvironment,anew fault-tolerantsystem with based on hteintegration ofprogrammablelogicdevices． dual-moduleredundancy isproposed using dynamic Among htese devices， static rnadom access memo~ reconfigurabletechniqueoffield programmable gate (SRAM)basedfieldprogrammablegatearray(FPGA)has array (FPGA)．Thissystem containsdetection and widerangeofapplicationsduetoitshig【h efficiencynad backup alternativefunctions，thatis，theself-detection low costadvnatages．However．SRAM basedFPGAsrae and self-heaHn~ functions can be completed，and vuMer~letohtesingleeventupsets(SEU)，whichoccur consequently a system design with low hardware commonlyinhighradiationenvironment，such asremote redundancy and high resource utilization can be space．When particleswith high—mass orradiation rays achievedsuccessfully．Soitcannotonlydetectfaultbut bumpintohtesensitiveareaofsemiconductordevices，satte alsorepairthefaulteffectivelyafterfailure．Hence．this chnagesofmemo~ cellorlogicsatteupsetsofsignalline method is especially practical to the dynamically may happen． Eventually， it could cause pemr anent reconfigurable computers based on FPGAs．Design componentdamageandsystem failure【． methodology hasbeen verified by Virtex一4 FPGA on ThetraditionalmethodologicsaimingtodealwithSEU XilinxM l403developmentplatform ． effect